All the planets in the solar system can fit in between the earth and moon.
I thought this was fascinating, so I went to research it, and found this
“How far is it to the Moon? Well, the Moon’s orbit is an ellipse, so sometimes it’s closer than other times. At its closest (called perigee), it can be somewhat less than 357,000 kilometers between the Earth’s and Moon’s centers. That’s already smaller than the planets aligned, but it gets worse: You have to subtract the radius of the Earth and Moon, since the planets have to fit between them. The Earth and Moon’s radii combined is about 8,100 km, making the distance between them more like 348,000 km. The planets don’t fit.”